带有空值和实值的lodash orderby排序不正确

问题描述

我有一个Angular 2打字稿应用程序，它使用lodash处理各种事情.

I have an Angular 2 typescript application that is using lodash for various things.

我有一个对象数组，正在使用对象中的属性进行排序...

I have an array of objects that I am ordering using a property in the object...

_.orderBy(this.myArray, ['propertyName'], ['desc']);

这很好用，但是我的问题是有时'propertyName'可以有一个空值.这些是作为降序列表中的第一项排序的，然后是最高的实际值.

This works well however my problem is that sometimes 'propertyName' can have a null value.These are ordered as the first item in a descending list, the highest real values then follow.

我想使这些空值以降序显示在最后.

I want to make these null values appear last in the descending ordering.

我理解为什么空值首先出现.

I understand why the nulls come first.

有人知道如何解决这个问题吗?

Does anyone know how to approach this?

推荐答案

我需要的代码如下:

_.orderBy(this.myArray, [( o ) => { return o.myProperty || ''}], ['desc']); 

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